鍃孔
huōkǒng
ㄏㄨㄛ ㄎㄨㄥˇ
Simplified 锪孔
- 1an enlargement at the outer end of a drilled hole, either funnel-shaped (a countersink) or cylindrical (a counterbore)
huōkǒng
ㄏㄨㄛ ㄎㄨㄥˇ
Simplified 锪孔
Keep 鍃孔 and it comes back until you know it.
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